Catalina Sky Survey
@catalinaskysurvey.bsky.social
Official page for the Catalina Sky Survey. NASA funded Near-Earth Object survey operating at the University of Arizona (Lunar and Planetary Laboratory) in partnership with Steward Observatory.
Website: https://catalina.lpl.arizona.edu/about
Website: https://catalina.lpl.arizona.edu/about
We appreciate the staff at Steward Observatory @stewardobservatory.bsky.social keeping the telescopes accessible! Clearing out snow from a recent storm so we can get back to finding hazardous asteroids!
January 27, 2026 at 9:12 PM
We appreciate the staff at Steward Observatory @stewardobservatory.bsky.social keeping the telescopes accessible! Clearing out snow from a recent storm so we can get back to finding hazardous asteroids!
Want to discover new Near-Earth Asteroids and Comets? Want to work on the front lines of Planetary Defense? Come join the CSS team as a Survey Operations Specialist!
arizona.csod.com/ux/ats/caree...
🔠#astronomy #asteroids
arizona.csod.com/ux/ats/caree...
🔠#astronomy #asteroids
Survey Operations Specialist, Lunar and Planetary Laboratory (updated)
Assist in the day-to-day operations of the Catalina Sky Survey, including telescope setup, calibration, and monitoring.Work under supervision to ensur...
arizona.csod.com
January 15, 2026 at 9:22 PM
Want to discover new Near-Earth Asteroids and Comets? Want to work on the front lines of Planetary Defense? Come join the CSS team as a Survey Operations Specialist!
arizona.csod.com/ux/ats/caree...
🔠#astronomy #asteroids
arizona.csod.com/ux/ats/caree...
🔠#astronomy #asteroids
Reposted by Catalina Sky Survey
"Huge if True" podcast visited Mt. Lemmon and the Catalina Sky Survey @catalinaskysurvey.bsky.social
youtu.be/LOn-mmezykQ?...
youtu.be/LOn-mmezykQ?...
Humanity’s Real Plan to Stop This Asteroid (Feat. Mark Rober)
YouTube video by Cleo Abram
youtu.be
November 17, 2025 at 11:28 PM
"Huge if True" podcast visited Mt. Lemmon and the Catalina Sky Survey @catalinaskysurvey.bsky.social
youtu.be/LOn-mmezykQ?...
youtu.be/LOn-mmezykQ?...
November 30, 2025 at 6:41 PM
Reposted by Catalina Sky Survey
For Asteroid Day, read about how even with the amazing Rubin Telescope asteroid discoveries, we still need dedicated near Earth asteroid searches, including by the Catalina Sky Survey @catalinaskysurvey.bsky.social
catalina.lpl.arizona.edu/news/spectac...
catalina.lpl.arizona.edu/news/spectac...
Spectacular First Images from the Rubin Observatory Usher in a New Era of Cosmic Surveying and NEO Detection | Catalina Sky Survey
catalina.lpl.arizona.edu
June 30, 2025 at 9:37 PM
For Asteroid Day, read about how even with the amazing Rubin Telescope asteroid discoveries, we still need dedicated near Earth asteroid searches, including by the Catalina Sky Survey @catalinaskysurvey.bsky.social
catalina.lpl.arizona.edu/news/spectac...
catalina.lpl.arizona.edu/news/spectac...
Reposted by Catalina Sky Survey
The 2025 Catalina Sky Survey Monsoon Workshop will be held in Tucson, August 1-5, as a splinter session of the ADASSx Summer Software Workshop, immediately following the Rubin Community Workshop.
Registration (free) and abstract submission are now open.
#PlanetSci #AstroMethods #PlanetaryDefense
Registration (free) and abstract submission are now open.
#PlanetSci #AstroMethods #PlanetaryDefense
Monsoon Workshop 2025 | Catalina Sky Survey
catalina.lpl.arizona.edu
May 19, 2025 at 3:45 AM
The 2025 Catalina Sky Survey Monsoon Workshop will be held in Tucson, August 1-5, as a splinter session of the ADASSx Summer Software Workshop, immediately following the Rubin Community Workshop.
Registration (free) and abstract submission are now open.
#PlanetSci #AstroMethods #PlanetaryDefense
Registration (free) and abstract submission are now open.
#PlanetSci #AstroMethods #PlanetaryDefense
Sorry folks, here is a no-login link. arizona.csod.com/ux/ats/caree...
R&D Software Engineer II (Lunar and Planetary Laboratory)
Collaborate directly with CSS scientists to design, build, and enhance algorithms for detecting moving objects, particularly asteroids, in astronomica...
arizona.csod.com
May 1, 2025 at 4:26 AM
Sorry folks, here is a no-login link. arizona.csod.com/ux/ats/caree...
We are recruiting a new C programmer. If you love astronomy and want to work on the front lines of planetary defense creating custom software solutions for extracting new NEOs from image data and much more, please take a look! ðŸ”
arizona.csod.com/ui/internal-...
arizona.csod.com/ui/internal-...
Welcome - Realize Your Potential: Cornerstone
arizona.csod.com
May 1, 2025 at 3:41 AM
We are recruiting a new C programmer. If you love astronomy and want to work on the front lines of planetary defense creating custom software solutions for extracting new NEOs from image data and much more, please take a look! ðŸ”
arizona.csod.com/ui/internal-...
arizona.csod.com/ui/internal-...
A well-written piece on Planetary Defense featuring a rock found at CSS in The American Scholar. Enjoy! ðŸ”
Asteroid Hunters - The American Scholar
The scientists and engineers who defend our planet day and night from potentially hazardous space rocks
theamericanscholar.org
March 18, 2025 at 12:42 AM
A well-written piece on Planetary Defense featuring a rock found at CSS in The American Scholar. Enjoy! ðŸ”
This is a pretty confined definition for a specific class of rock. Often smaller rocks that pose a higher impact risk are also called PHAs. The recurrence interval for a 140m+ impact is thousands of years. The idea is to catalog them all so we can be sure when the next impact might happen.
March 8, 2025 at 9:06 AM
This is a pretty confined definition for a specific class of rock. Often smaller rocks that pose a higher impact risk are also called PHAs. The recurrence interval for a 140m+ impact is thousands of years. The idea is to catalog them all so we can be sure when the next impact might happen.
Rocks that fall under the PHA umbrella from the link above mostly pose no direct threat in the next 100+ years. Their orbits tend to be more gravitationally dynamic though, they can evolve into new orbits which might pose a threat in the future so they get closer attention.
March 8, 2025 at 9:03 AM
Rocks that fall under the PHA umbrella from the link above mostly pose no direct threat in the next 100+ years. Their orbits tend to be more gravitationally dynamic though, they can evolve into new orbits which might pose a threat in the future so they get closer attention.
More information on PHAs can be found here: cneos.jpl.nasa.gov/about/neo_gr...
NEO Basics
NASA's Near-Earth Object (NEO) web-site. Data related to Earth impact risk, close-approaches, and much more.
cneos.jpl.nasa.gov
March 7, 2025 at 9:05 PM
More information on PHAs can be found here: cneos.jpl.nasa.gov/about/neo_gr...
Interactive orbit:
CSS Orbit View | Catalina Sky Survey
catalina.lpl.arizona.edu
March 7, 2025 at 8:49 PM
Interactive orbit:
2025 CE13 is a newly discovered potentially hazardous asteroid. It is between 141-316m in diameter and passes within 4.4LD of Earth's orbit. It was discovered on Feb 2nd, 2025 by CSS observer H. Groeller. 2025 CE13 poses no impact threat to Earth. ðŸ”
March 7, 2025 at 8:49 PM
2025 CE13 is a newly discovered potentially hazardous asteroid. It is between 141-316m in diameter and passes within 4.4LD of Earth's orbit. It was discovered on Feb 2nd, 2025 by CSS observer H. Groeller. 2025 CE13 poses no impact threat to Earth. ðŸ”
Interactive orbit:
CSS Orbit View | Catalina Sky Survey
catalina.lpl.arizona.edu
February 25, 2025 at 3:40 AM
Interactive orbit:
Congratulations to CSS observer Hannes Groeller. Hannes recently discovered comet C/2025 D1 (Groeller) from the Bok telescope, which we operate under a partnership with Spacewatch. C/2025 D1 has the largest perihelion distance of any comet found to date. Interactive orbit in comments. ðŸ”
February 25, 2025 at 3:40 AM
Congratulations to CSS observer Hannes Groeller. Hannes recently discovered comet C/2025 D1 (Groeller) from the Bok telescope, which we operate under a partnership with Spacewatch. C/2025 D1 has the largest perihelion distance of any comet found to date. Interactive orbit in comments. ðŸ”
Interactive orbit:
CSS Orbit View | Catalina Sky Survey
catalina.lpl.arizona.edu
February 13, 2025 at 11:19 PM
Interactive orbit:
2025 CW is a newly discovered potentially hazardous asteroid. It is between 200-450m in diameter and passes within 4.32LD of Earth's orbit. It was discovered on Feb 3rd, 2025 by CSS observer T. Beuden. 2025 CW poses no impact threat to Earth. ðŸ”
February 13, 2025 at 11:19 PM
2025 CW is a newly discovered potentially hazardous asteroid. It is between 200-450m in diameter and passes within 4.32LD of Earth's orbit. It was discovered on Feb 3rd, 2025 by CSS observer T. Beuden. 2025 CW poses no impact threat to Earth. ðŸ”
Happy to announce we have joined BlueSky and look forward to sharing information about the amazing discoveries we make at CSS. Stick around for some neat stuff! #astronomy #asteroids #planetarydefense
February 13, 2025 at 10:56 PM
Happy to announce we have joined BlueSky and look forward to sharing information about the amazing discoveries we make at CSS. Stick around for some neat stuff! #astronomy #asteroids #planetarydefense
We are a leading near-Earth Object survey operating at the UofA. We'd like to share interesting discoveries with the feed.
February 13, 2025 at 10:47 PM
We are a leading near-Earth Object survey operating at the UofA. We'd like to share interesting discoveries with the feed.
